滚动加载技术详解-优快云博客

本文链接：https://blog.youkuaiyun.com/clj9017/article/details/37319297

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>滚动加载</title>
</head>
<script src="file:///D|/wamp/www/Js/jquery-1.10.2.min.js" type="text/javascript"></script>
<body>
<div id="loading"></div>
<div style="width:auto; height:1000px;">
</div>
 <script type="text/javascript">

        $(document).ready(function() {

            $("#loading").html("正在加载...");

            setTimeout("getData()", 1500);

        });
        var s = setInterval("isShow()", 1500);//每隔1.5秒判断滚动条是否在2/3处,是的话加载数据
        var isShow = function() {//判断是否显示数据
            if ($(window).scrollTop() + $(window).height() >= $(document).height()*2/3) {
                $("#loading").html("正在加载....");
                setTimeout("getData()", 1500);
            }
        };
        var getData = function() {//Ajax获取服务器数据
            $.ajax({//初始化
                url: "Service.aspx",
                type: 'GET',
                data: { page: getPage() },
                dateType: 'html',
                timeout: 120000,
                success: function(msg) {
                    if (msg == "") {
                        clearInterval(s);//循环停止
                        $("#loading").html("加载完成了");
                        return false;
                    } else {
                        $("#documentDiv").append(msg);
                        $("#pIndex").val(getPage() + 1);
                        $("#loading").html("");
                    }
                }
            });
        };
        var getPage = function() {//获得当前页码
            return parseInt($("#pIndex").val());
        };
    </script>
</body>
</html>